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Old 11-28-2013, 04:05 PM   #1
wbhubbert3's Avatar
Join Date: Jul 2011
Location: Puyallup, WA, Frenchtown, MT, & Bend, OR
Posts: 98
Water Leak - Driver's Window

While in Kansas last month, we were treated to a very heavy rain for three (3) days. We were parked and leveled. On day 2, I noticed a little swelling on the wall next to the driver's seat. Carpet was/is dry. Since then we have encountered no wet weather and the MH is back in Montana and parked inside the garage for the winter.

I believe it is a bad window seal. When I called Dave Root Glass Repair for advise as we'll be in Bend, OR in April, he felt it could be coming from anywhere (wonderful!). He suggested putting silicone on all the body seams on the DS, but I'd rather not do that first if this is a localized problem.

Other than this, the coach was perfectly dry.

1. Anyone experienced a window problem similiar to this; and if so, what did you do to correct it?

2. Should I remove the window and let it dry out? Garage is dry and heated. Re-seal with what?

3. Any other opinions and/or suggestions?

Happy Thanksgiving.


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Bruce & Donna, plus 2 Rhodesian Ridgebacks
2003 Alpine Coach 36-FDDS, WA, MT & OR
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Old 11-28-2013, 04:14 PM   #2
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Join Date: Mar 2013
Posts: 323
Looks to me like the gasket between the window and the coach body has failed I would pull the window and put a new gasket or gasket material in which ever is recommended for your coach then a small bead of proflex at the top IMHO good luck!!!

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Old 11-28-2013, 04:51 PM   #3
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Ditto on Mitch's analysis.
Baja-tested '08 2-slide 36'
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Old 11-28-2013, 06:25 PM   #4
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Did you check the drains at the bottom are clear. I had a blockage and in some very heavy rain water would come up and fill the bottom of the window slide groove and spill over. Blast the window with a hose and check water is coming out of those drains. If it is a leak round the frame you do not need to pull the window out and reseal as nowadays all installers just run a bead of silicone around the edge of the frame. There is no gasket as such between the frame and the coach body, they originally used a flexible sealer of some sort.
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Old 11-28-2013, 06:30 PM   #5
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Location: St. Augustine, FL
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Maybe a long shot but as Dave Root Glass told you.......it could be anywhere. Have you checked the front cap to roof caulking? Mine had a leak that manifested as yours did but the source was the front cap to roof seam caulk.
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Old 11-30-2013, 06:20 PM   #6
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Location: Home is Hanford, CA (near Fresno)
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Hi Bruce!

We had the same thing happen. I got outside on a ladder and held the hose next to the window frame at the lowest point of the frame, then worked my way up one side, then the other until my wife told me that she spotted water inside. I dried the water and then put just a small bead of silicone sealant right at where the leak was and let it cure. The next day we ran some more water and made sure that there were no more leaks.

I believe that one leak we found was where the vertical aluminum bar (in the center of the window) meets the lower horizontal bar. Again, just a little silicone and we've been good for a couple of years.

This leak did cause a "bubble" of water behind the wallpaper below the left hand electric panel (below the window). I poked a small hole in the bubble, towards the bottom of the bubble, and drained it. The wallpaper appears perfect again and you can't even see the small hole I poked in it.

Good luck!

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2004 Alpine 34 FDDS
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driver, leak, water, water leak, window

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